Locking device for safes



March 1,1927. 1,619,676

c. F. MEILINK LOCKING DEVICE FOR SAFES Filed Jan 13. 1922 2 Sheets-Sheet 1 Q1412, r-f walk Air-IE3 NEY' Mar'ch 1,1927. 1,619,676

- c. F. MEILINK LOCKING DEVICE FOR SAFES Filed Jan. 13. 1922 2 Sheets-Sheet, 2

(Lu m the conducting of heat inward toward the contents of the safe in the inner wall 5.

During the action of heat, should the safe be exposed to a severe fire, filling or packing 33 between the inner wall 5 and the outer wall 4 of the safe, may give off vapors or moisture which may pass through vent openings 34 into the groove ll and thereby further assist in damming back any conducting of heat from the outer side of the safe inward. The outer surfaces-of these vents 34 may be varnished over so that the finished side of the safe is complete.

There is also considerable utility in the assembly of the safe as designed with this looking bolt groove continuous throughout the entire doorway opening or jamb. This feature is that there is only necessary lineup for the bolts in the plane of this groove 11, and this single plane lineup is a very considerable saving in the speed of hanging the doors, for the bolts need only be aligned in the plane of the groove.

The action of heat in its expansion has a tendency for the frame 3 to pull the jamb away from the door frame. As the ribs 22, 23, of the frame interfit in grooves 10, 12, of the jamb the sides of the grooves away from the frame 3 are pulled against the corresponding sides of these ribs 22, 23. As the heat is more intense at the outer side there is accordingly first a sealing between the groove 12 and the rib 23, and in this pull action the ledge 24 slides directly as to the facing ledge 13. If desired, packing strips 35, 36, may assist in isolating the chamber formed by the groove 11. The frame member 8 is of so much greater mass than the jamb and the door frame, that this member 3 is less readily heated. This frame member 3 accordingly serves to assist in holding the jamb against the door frame when heat expansion conditions arise.

The bolt throwing handles 28, 31, are shown as mounted on spindles 37. Fixed fulcrum levers 29 are connected to the bolts 29 and are directly connected or are connected through link 29 to the cranks at the handles. The connections of the link, and of the levers, are loose to permit of slight play. The cranks 38, 89, are loosely mounted on these spindles 37. The spindles 37 have anchored therewith key washers 40 as held in position by lock nuts 41. Having threaded engagement with each lock washer 40 is a. bolt 42 having reduced end 43 as a frangible extension to enter opening 44 in the respective cranks 38, 39. Accordingly, should effort be made to force the bolts with the bolts held by the lock 45, this frangible extension 43 will give way. This is a safety device of considerable value against forcing entrance to this safe construction. This case, in so far as the subjectanatter herein is common, is a continuation in part of ap- 1. A safe provided wit-h a door, a bolt for the door, a bolt actuator mounted for rotation, and a frangible connection eccentric of the actuator between the actuator and bolt.

2. A safe provided with a door, a bolt for the door, a crank with which the bolts are connected, an actuator spindle mounted for rotation, a frangible pin connection eccentric to the spindle between the spindle and crank, and a lock efiective upon locking the door for holding the crank whereby attempt to force the bolts by applying power to the spindle may break the pin and leave the bolts unthrown as held by the lock.

3. A safe having a polygonal opening, a jamb for the opening having a groove in the plane of the opening providing for the extent of said groove uniformity in the jamb cross-section, a polygonal door for registering with the opening and as so moved there- .into held engaged by the opening against angular shifting, a rock shaft carried by and extending to protrude from the front of the door, a bolt for the door, and a member pivotally connected to both the rock shaft and bolt and rockab-le relatively to each thereof in shifting the bolt in the plane of the door to protrude marginally therefrom to engage the groove.

4. A safe door having an outer wall, a rock shaft through said wall, a pair of eccentrically disposed wrist pins carried by the shaft, and independent levers from said wrist pins, spaced fulcra for the levers, and bolts pivotally connected to the levers remote from the wrist pins.

5. A safe housing provided with an opening and seat means adjacent said opening, a closure for the opening, bolt-s carried by the closure, a shaft provided with a crank, and levers loosely connected to the crank and the bolts and fixed fulcra for the levers, said bolts and cranks being spaced along the levers from the fulcra whereby shaft rotation may be communicated through the levers for rocking the levers on their fulcra in effecting throwing and withdrawing of the bolts.

6. A bolt control mechanism embodying a rock shaft provided with a crank, a lever directly pivotally connected to the crank, a fulcrum for the lever, a bolt, and relative movement permitting connection means between the bolt and lever.

7 A bolt control mechanism embodying a shaft provided with a crank, a pair of parallel bolts, levers oppositely extending from said crank to the bolts, said levers being loosely connected to the bolts, and afulcrum for each lever whereby rocking of the shaft is effective directly through one lever for throwing one bolt, and is independently effeotive through the other lever for throwing the other bol 8. A bolt control mechanism embodying a rock shaft provided with a crank, a plurality of reciprocable bolts, and a rockable member from each bolt loosely connected to the bolt and the crank, one member movable relatively to the other in bolt throw operation, whereby shifting of the crank from said 10 shaft in its movement is direct for each bolt, and one bolt may not drag or bind to bring about any binding of another bolt or binding of the member to such other bolt.

In witness whereof I affix my signature.

CHARLES F. MEILINK. 

